Spring-hinge.



PATENTED JUNE 12, 1906.

E. BOMMER. SPRI APPLICATION FILED 1mm, 1.905.

NG HINGE.

UNITED STATES PATENT OFFICE.

SPRING-HINGE- Specification of Letters Patent.

Patented June 12, 1906.

Application filed March 2, 1905. Serial No. 248,127.

To all whom it mayconcern:

Be it known that I, EMIL BoMMER, a citizen of the United States,residing in New York, borough of Brooklyn, and State of New York, haveinvented certain new Improvements in Spring-Hinges, of which thefollowing is a specification.

This invention relates to spring-hinges, and has for its object toprovide an improved spring-hinge especially adapted for screendoors.

To this end the invention consists in the novel features andcombinations of parts to be hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents a front elevation ofmy improved spring-hinge. Fig. 2 is a horizontal section of the same online 2 2, Fig. 1. Figs. 3 and 4 are respectively a detail Irontelevation and a horizontal section on line 4 4, Fig. 3, of one leaf andthe spring-barrel applied to the same. Figs. 5 and 6 are respectively afront elevation of the second leaf and a horizontal section on line 6 6,Fig. 5, of the same and Figs. 7, 8, and 9 are respectively a side viewof the adjustable tension-collar, a side elevation of the coiled spring,and a perspective view of the fixed tension-collar.

Similar letters of reference indicate corresponding parts in differentfigures of the drawings.

Referring to the drawin s, a represents one leaf, and b the other leaf,of the improved spring-hinge. The spring-barrel d is made integral withleaf (1 and stamped, by means of suitable dies, from a piece of sheetmetal, preferably sheet-bronze, of suitable thickness. The spring-barreld projects first in straight direction from the body of the leaf and isthen curved approximately in a semicircle, leaving the part adjacent tothe leaf open. The upper and lower ends (1 d of the springbarrel (1 arebent inwardly, so as to form seats for the tension-collars, the upperseat having a circular opening 0 and the lower seat (1 a square opening0, as shown in Fig. 4. The second leaf 1) is provided with perforatedhorizontal ears b N, which are bent up at right angles to the body ofthe leaf 6 and connected by a forwardly-projecting flange b which isbent up along the inner edge of the leaf, as shown in Figs. 5 and 6.Both leaves a and b are attached by fastening-screws s s to thedoor-casing and door, respectively. Into the seats at the ends of thespring-barrel d are inserted an upper adjustable tension-collar e and alower fixed tension-collar e The inwardly-bent ends of a helical springF are inserted into the recessed holders 6 e of the tension-collars inthe well-known manner. A pintle g, which is provided with screw ti I sor terminals g at its ends, is passed cent ra 1y through the perforatedears 1) b tension-collars e e, coilsprin' F, and the seats at the endsof the barre and held in place by the screw tips or terminals g. Thefixed tension-collar e is provided with a square boss 6 between itsouter flange and its recessed spring-holder 6 as shown in Fig. 9. Thisboss 6 is inserted into the square opening 0 of the lower seat (1 of thebarrel of the leaf a, so that the tension-collar e is thereby supportedrigidly in position without requiring an exterior fas tenin orconnection between the springbarre d and the tension-collar e.

For assembling the parts of the springhinge the fixed tension-collar ewith its its square boss is placed in position in the square opening inthe seat at the bottom of the sprin barrel and the inner recess of thespring-ho der connected with the lower end of the coil-spring F. Theadjustable tensioncollar e is then seated in the upper end of thespring-barrel and connected with the upper end of the coil-spring. Theears of the leaf 6 are then placed over the tension-collars and thepintle 9 passed through the ears, tension collars, spring, and barrel,and the terminals g then screwed down on the ends of the pintle. Astop-pin h is then inserted into one of the holes in the adjustabletension-collar e after the coil-spring is set to proper tension by asuitable lever inserted into one of the remaining holes of theadjustable tensioncollar and seated in a recess b in theforwardly-projecting flange 6 of the leaf 1), as shown in Fig. 1.

As the barrel on one leaf and theforwardlyprojecting flange on the otherleaf inclose the coil-spring, it is out of sight when the door isclosed.

The hinge can be manufactured at comparatively small cost and combines aneat and finished appearance with great strength and durability, so asto comply more fully with the requirements of the better style of screenand other doors.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent In a screen-door spring-hinge, the combination of aleaf provided With a semicircular spring-barrel having inwardly-bentupper and lower ears or seats, one of said seats being provided with acircular opening and the 5 other With a square opening, a second leafprovided with bent-up perforated ears extending over said first-namedears, tensioncollars inter osed between the corresponding ears of saidspring barrel and said lastro named ears, one of said collars beingrotatable in said circular opening and the other provided With anintermediate s uare boss engaging said square opening, an a intlepassing through the ears of said eaves and through said tension-collars.

In testimony that I claim the foregoing as my invention I have signed myname in presence of tWo subscribing Witnesses.

EMIL BOMMER.

Witnesses:

PAUL GoEPEL, HENRY J. SUI-IRBIER.

